Gmail not updating on android phone no validating documentbuilder implementation available
To start, head to the Next, simply select the Gmail app from the list, then choose "Don't optimize" and press "Done." After that, repeat this same process for the Hangouts app, and hopefully your notification issues will be a thing of the past.I have a Samsung Galaxy S3 and I love the new Gmail app. My only problem is that it doesn't sync emails (I don't receive any new notifications when new emails arrive, I have to manually click refresh in the app which is annoying) when I'm on Mobile Data.To check if your calendar sync is working correctly, please follow the next steps: 1. Scroll down to Accounts and select your calendar account (Google Calendar, or Exchange Corporate) 3.Here you will get an overview of the sync status of your accounts. Tap on your specific account and see if "Calendar" is selected for sync and when it was the last time your Android device has synchronized with your calendar server *If your device has a global auto-sync toggle, please also check whether this is turned on. Check if other calendar apps can create new events on the calendar you've selected.This fix requires no action, and will roll out globally over the next week.
But sometimes your device can experience a sync error, leading to problems with uploading and refreshing your calendar data.
The issue mostly affects Gmail on Nexus devices running Marshmallow (but other apps, devices, and Android builds have also been reported).